Spam Filters (Continued)

We use a spam filter for our email. It's from a company called Postini. Its a "pass through" solution which means the spam filtering software runs on Postini's servers, not ours.

Last month, in my post on Spam Filters, I complained about Positini.

Well, yesterday I found out why Postini was doing so poorly. Some spammers (a growing number) have found a way to route their mail around the Postini servers and directly into my mail box.

This is terrible news for Postini. And bad news for me too. Because it means I need to get a new spam filter.

Anyone who uses a spam filter that is ASP-based and doesn't run directly on your mail server should check to see what's going on with your email messages. If your message headers show the mail coming directly from the sender to you, instead of through your spam filter, then you've got the same problem.

This is another example of the spammers being one step ahead of the good guys (us and the tools we use to stop them). And it makes me wonder a little about my most recent post on eradicating spam.

Comments

[Jonathan Greene]

I've been using Spam Intercepter which has been working extremely well. It runs a hosted spam assassin setup that you can enhance with black and white lists. Questionable messages get held for your review before downloading. Everything runs through their servers and is easily managed by your browser.

[Rich]

Your ISP should have firewalled their mail server to only accept e-mail on port 25 from postini.

[Aparaty cyfrowe]

I am very interested this theme, with attention I will read following informations.
Notebooki , Telewizory Plazmowe , Telewizory Lcd , dvd , kino domowe , Kamery Cyfrowe , kuchnie , ekspresy do kawy , acer , lg , samsung , siemens , panasonic , toshiba , amica .